diff options
| -rw-r--r-- | boot/Makefile | 2 | ||||
| -rw-r--r-- | boot/vbe_common.c | 375 | ||||
| -rw-r--r-- | boot/vbe_common.h | 137 | ||||
| -rw-r--r-- | boot/vbe_simple.c | 98 | ||||
| -rw-r--r-- | boot/vbe_simple.h | 16 | ||||
| -rw-r--r-- | boot/vbe_simple_fw.c | 207 | ||||
| -rw-r--r-- | common/spl/Kconfig | 8 | ||||
| -rw-r--r-- | common/spl/Kconfig.tpl | 8 | ||||
| -rw-r--r-- | common/spl/Kconfig.vpl | 8 | ||||
| -rw-r--r-- | common/spl/Makefile | 1 | ||||
| -rw-r--r-- | common/spl/spl.c | 15 | ||||
| -rw-r--r-- | common/spl/spl_reloc.c | 183 | ||||
| -rw-r--r-- | include/spl.h | 90 |
13 files changed, 924 insertions, 224 deletions
diff --git a/boot/Makefile b/boot/Makefile index a24fd90c510..c2753de8163 100644 --- a/boot/Makefile +++ b/boot/Makefile @@ -65,7 +65,7 @@ endif obj-$(CONFIG_$(PHASE_)BOOTMETH_VBE) += vbe.o obj-$(CONFIG_$(PHASE_)BOOTMETH_VBE_REQUEST) += vbe_request.o -obj-$(CONFIG_$(PHASE_)BOOTMETH_VBE_SIMPLE) += vbe_simple.o +obj-$(CONFIG_$(PHASE_)BOOTMETH_VBE_SIMPLE) += vbe_simple.o vbe_common.o obj-$(CONFIG_$(PHASE_)BOOTMETH_VBE_SIMPLE_FW) += vbe_simple_fw.o obj-$(CONFIG_$(PHASE_)BOOTMETH_VBE_SIMPLE_OS) += vbe_simple_os.o diff --git a/boot/vbe_common.c b/boot/vbe_common.c new file mode 100644 index 00000000000..0d51fe762c3 --- /dev/null +++ b/boot/vbe_common.c @@ -0,0 +1,375 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Verified Boot for Embedded (VBE) common functions + * + * Copyright 2024 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#include <bootstage.h> +#include <dm.h> +#include <blk.h> +#include <image.h> +#include <mapmem.h> +#include <memalign.h> +#include <spl.h> +#include <u-boot/crc.h> +#include "vbe_common.h" + +binman_sym_declare(ulong, u_boot_vpl_nodtb, size); +binman_sym_declare(ulong, u_boot_vpl_bss_pad, size); +binman_sym_declare(ulong, u_boot_spl_nodtb, size); +binman_sym_declare(ulong, u_boot_spl_bss_pad, size); + +int vbe_get_blk(const char *storage, struct udevice **blkp) +{ + struct blk_desc *desc; + char devname[16]; + const char *end; + int devnum; + + /* First figure out the block device */ + log_debug("storage=%s\n", storage); + devnum = trailing_strtoln_end(storage, NULL, &end); + if (devnum == -1) + return log_msg_ret("num", -ENODEV); + if (end - storage >= sizeof(devname)) + return log_msg_ret("end", -E2BIG); + strlcpy(devname, storage, end - storage + 1); + log_debug("dev=%s, %x\n", devname, devnum); + + desc = blk_get_dev(devname, devnum); + if (!desc) + return log_msg_ret("get", -ENXIO); + *blkp = desc->bdev; + + return 0; +} + +int vbe_read_version(struct udevice *blk, ulong offset, char *version, + int max_size) +{ + ALLOC_CACHE_ALIGN_BUFFER(u8, buf, MMC_MAX_BLOCK_LEN); + + /* we can use an assert() here since we already read only one block */ + assert(max_size <= MMC_MAX_BLOCK_LEN); + + /* + * we can use an assert() here since reading the wrong block will just + * cause an invalid version-string to be (safely) read + */ + assert(!(offset & (MMC_MAX_BLOCK_LEN - 1))); + + offset /= MMC_MAX_BLOCK_LEN; + + if (blk_read(blk, offset, 1, buf) != 1) + return log_msg_ret("read", -EIO); + strlcpy(version, buf, max_size); + log_debug("version=%s\n", version); + + return 0; +} + +int vbe_read_nvdata(struct udevice *blk, ulong offset, ulong size, u8 *buf) +{ + uint hdr_ver, hdr_size, data_size, crc; + const struct vbe_nvdata *nvd; + + /* we can use an assert() here since we already read only one block */ + assert(size <= MMC_MAX_BLOCK_LEN); + + /* + * We can use an assert() here since reading the wrong block will just + * cause invalid state to be (safely) read. If the crc passes, then we + * obtain invalid state and it will likely cause booting to fail. + * + * VBE relies on valid values being in U-Boot's devicetree, so this + * should not every be wrong on a production device. + */ + assert(!(offset & (MMC_MAX_BLOCK_LEN - 1))); + + if (offset & (MMC_MAX_BLOCK_LEN - 1)) + return log_msg_ret("get", -EBADF); + offset /= MMC_MAX_BLOCK_LEN; + + if (blk_read(blk, offset, 1, buf) != 1) + return log_msg_ret("read", -EIO); + nvd = (struct vbe_nvdata *)buf; + hdr_ver = (nvd->hdr & NVD_HDR_VER_MASK) >> NVD_HDR_VER_SHIFT; + hdr_size = (nvd->hdr & NVD_HDR_SIZE_MASK) >> NVD_HDR_SIZE_SHIFT; + if (hdr_ver != NVD_HDR_VER_CUR) + return log_msg_ret("hdr", -EPERM); + data_size = 1 << hdr_size; + if (!data_size || data_size > sizeof(*nvd)) + return log_msg_ret("sz", -EPERM); + + crc = crc8(0, buf + 1, data_size - 1); + if (crc != nvd->crc8) + return log_msg_ret("crc", -EPERM); + + return 0; +} + +/** + * h_vbe_load_read() - Handler for reading an SPL image from a FIT + * + * See spl_load_reader for the definition + */ +ulong h_vbe_load_read(struct spl_load_info *load, ulong off, ulong size, + void *buf) +{ + struct blk_desc *desc = load->priv; + lbaint_t sector = off >> desc->log2blksz; + lbaint_t count = size >> desc->log2blksz; + int ret; + + log_debug("vbe read log2blksz %x offset %lx sector %lx count %lx\n", + desc->log2blksz, (ulong)off, (long)sector, (ulong)count); + + ret = blk_dread(desc, sector, count, buf); + log_debug("ret=%x\n", ret); + if (ret < 0) + return ret; + + return ret << desc->log2blksz; +} + +int vbe_read_fit(struct udevice *blk, ulong area_offset, ulong area_size, + struct spl_image_info *image, ulong *load_addrp, ulong *lenp, + char **namep) +{ + ALLOC_CACHE_ALIGN_BUFFER(u8, sbuf, MMC_MAX_BLOCK_LEN); + ulong size, blknum, addr, len, load_addr, num_blks, spl_load_addr; + ulong aligned_size, fdt_load_addr, fdt_size; + const char *fit_uname, *fit_uname_config; + struct bootm_headers images = {}; + enum image_phase_t phase; + struct blk_desc *desc; + int node, ret; + bool for_xpl; + void *buf; + + desc = dev_get_uclass_plat(blk); + + /* read in one block to find the FIT size */ + blknum = area_offset / desc->blksz; + log_debug("read at %lx, blknum %lx\n", area_offset, blknum); + ret = blk_read(blk, blknum, 1, sbuf); + if (ret < 0) + return log_msg_ret("rd", ret); + else if (ret != 1) + return log_msg_ret("rd2", -EIO); + + ret = fdt_check_header(sbuf); + if (ret < 0) + return log_msg_ret("fdt", -EINVAL); + size = fdt_totalsize(sbuf); + if (size > area_size) + return log_msg_ret("fdt", -E2BIG); + log_debug("FIT size %lx\n", size); + aligned_size = ALIGN(size, desc->blksz); + + /* + * Load the FIT into the SPL memory. This is typically a FIT with + * external data, so this is quite small, perhaps a few KB. + */ + if (IS_ENABLED(CONFIG_SANDBOX)) { + addr = CONFIG_VAL(TEXT_BASE); + buf = map_sysmem(addr, size); + } else { + buf = malloc(aligned_size); + if (!buf) + return log_msg_ret("fit", -ENOMEM); + addr = map_to_sysmem(buf); + } + num_blks = aligned_size / desc->blksz; + log_debug("read %lx, %lx blocks to %lx / %p\n", aligned_size, num_blks, + addr, buf); + ret = blk_read(blk, blknum, num_blks, buf); + if (ret < 0) + return log_msg_ret("rd3", ret); + else if (ret != num_blks) + return log_msg_ret("rd4", -EIO); + log_debug("check total size %x off_dt_strings %x\n", fdt_totalsize(buf), + fdt_off_dt_strings(buf)); + +#if CONFIG_IS_ENABLED(SYS_MALLOC_F) + log_debug("malloc base %lx ptr %x limit %x top %lx\n", + gd->malloc_base, gd->malloc_ptr, gd->malloc_limit, + gd->malloc_base + gd->malloc_limit); +#endif + /* figure out the phase to load */ + phase = IS_ENABLED(CONFIG_TPL_BUILD) ? IH_PHASE_NONE : + IS_ENABLED(CONFIG_VPL_BUILD) ? IH_PHASE_SPL : IH_PHASE_U_BOOT; + + /* + * Load the image from the FIT. We ignore any load-address information + * so in practice this simply locates the image in the external-data + * region and returns its address and size. Since we only loaded the FIT + * itself, only a part of the image will be present, at best. + */ + fit_uname = NULL; + fit_uname_config = NULL; + log_debug("loading FIT\n"); + + if (xpl_phase() == PHASE_SPL && !IS_ENABLED(CONFIG_SANDBOX)) { + struct spl_load_info info; + + spl_load_init(&info, h_vbe_load_read, desc, desc->blksz); + xpl_set_phase(&info, IH_PHASE_U_BOOT); + log_debug("doing SPL from %s blksz %lx log2blksz %x area_offset %lx + fdt_size %lx\n", + blk->name, desc->blksz, desc->log2blksz, area_offset, ALIGN(size, 4)); + ret = spl_load_simple_fit(image, &info, area_offset, buf); + log_debug("spl_load_abrec_fit() ret=%d\n", ret); + + return ret; + } + + ret = fit_image_load(&images, addr, &fit_uname, &fit_uname_config, + IH_ARCH_DEFAULT, image_ph(phase, IH_TYPE_FIRMWARE), + BOOTSTAGE_ID_FIT_SPL_START, FIT_LOAD_IGNORED, + &load_addr, &len); + if (ret == -ENOENT) { + ret = fit_image_load(&images, addr, &fit_uname, + &fit_uname_config, IH_ARCH_DEFAULT, + image_ph(phase, IH_TYPE_LOADABLE), + BOOTSTAGE_ID_FIT_SPL_START, + FIT_LOAD_IGNORED, &load_addr, &len); + } + if (ret < 0) + return log_msg_ret("ld", ret); + node = ret; + log_debug("load %lx size %lx\n", load_addr, len); + + fdt_load_addr = 0; + fdt_size = 0; + if ((xpl_phase() == PHASE_TPL || xpl_phase() == PHASE_VPL) && + !IS_ENABLED(CONFIG_SANDBOX)) { + /* allow use of a different image from the configuration node */ + fit_uname = NULL; + ret = fit_image_load(&images, addr, &fit_uname, + &fit_uname_config, IH_ARCH_DEFAULT, + image_ph(phase, IH_TYPE_FLATDT), + BOOTSTAGE_ID_FIT_SPL_START, + FIT_LOAD_IGNORED, &fdt_load_addr, + &fdt_size); + fdt_size = ALIGN(fdt_size, desc->blksz); + log_debug("FDT noload to %lx size %lx\n", fdt_load_addr, + fdt_size); + } + + for_xpl = !USE_BOOTMETH && CONFIG_IS_ENABLED(RELOC_LOADER); + if (for_xpl) { + image->size = len; + image->fdt_size = fdt_size; + ret = spl_reloc_prepare(image, &spl_load_addr); + if (ret) + return log_msg_ret("spl", ret); + } + if (!IS_ENABLED(CONFIG_SANDBOX)) + image->os = IH_OS_U_BOOT; + + /* For FIT external data, read in the external data */ + log_debug("load_addr %lx len %lx addr %lx aligned_size %lx\n", + load_addr, len, addr, aligned_size); + if (load_addr + len > addr + aligned_size) { + ulong base, full_size, offset, extra, fdt_base, fdt_full_size; + ulong fdt_offset; + void *base_buf, *fdt_base_buf; + + /* Find the start address to load from */ + base = ALIGN_DOWN(load_addr, desc->blksz); + + offset = area_offset + load_addr - addr; + blknum = offset / desc->blksz; + extra = offset % desc->blksz; + + /* + * Get the total number of bytes to load, taking care of + * block alignment + */ + full_size = len + extra; + + /* + * Get the start block number, number of blocks and the address + * to load to, then load the blocks + */ + num_blks = DIV_ROUND_UP(full_size, desc->blksz); + if (for_xpl) + base = spl_load_addr; + base_buf = map_sysmem(base, full_size); + ret = blk_read(blk, blknum, num_blks, base_buf); + log_debug("read foffset %lx blknum %lx full_size %lx num_blks %lx to %lx / %p: ret=%d\n", + offset - 0x8000, blknum, full_size, num_blks, base, base_buf, + ret); + if (ret < 0) + return log_msg_ret("rd", ret); + if (ret != num_blks) + return log_msg_ret("rd", -EIO); + if (extra && !IS_ENABLED(CONFIG_SANDBOX)) { + log_debug("move %p %p %lx\n", base_buf, + base_buf + extra, len); + memmove(base_buf, base_buf + extra, len); + } + + if ((xpl_phase() == PHASE_VPL || xpl_phase() == PHASE_TPL) && + !IS_ENABLED(CONFIG_SANDBOX)) { + image->load_addr = spl_get_image_text_base(); + image->entry_point = image->load_addr; + } + + /* now the FDT */ + if (fdt_size) { + fdt_offset = area_offset + fdt_load_addr - addr; + blknum = fdt_offset / desc->blksz; + extra = fdt_offset % desc->blksz; + fdt_full_size = fdt_size + extra; + num_blks = DIV_ROUND_UP(fdt_full_size, desc->blksz); + fdt_base = ALIGN(base + len, 4); + fdt_base_buf = map_sysmem(fdt_base, fdt_size); + ret = blk_read(blk, blknum, num_blks, fdt_base_buf); + log_debug("fdt read foffset %lx blknum %lx full_size %lx num_blks %lx to %lx / %p: ret=%d\n", + fdt_offset - 0x8000, blknum, fdt_full_size, num_blks, + fdt_base, fdt_base_buf, ret); + if (ret != num_blks) + return log_msg_ret("rdf", -EIO); + if (extra) { + log_debug("move %p %p %lx\n", fdt_base_buf, + fdt_base_buf + extra, fdt_size); + memmove(fdt_base_buf, fdt_base_buf + extra, + fdt_size); + } +#if CONFIG_IS_ENABLED(RELOC_LOADER) + image->fdt_buf = fdt_base_buf; + + ulong xpl_size; + ulong xpl_pad; + ulong fdt_start; + + if (xpl_phase() == PHASE_TPL) { + xpl_size = binman_sym(ulong, u_boot_vpl_nodtb, size); + xpl_pad = binman_sym(ulong, u_boot_vpl_bss_pad, size); + } else { + xpl_size = binman_sym(ulong, u_boot_spl_nodtb, size); + xpl_pad = binman_sym(ulong, u_boot_spl_bss_pad, size); + } + fdt_start = image->load_addr + xpl_size + xpl_pad; + log_debug("load_addr %lx xpl_size %lx copy-to %lx\n", + image->load_addr, xpl_size + xpl_pad, + fdt_start); + image->fdt_start = map_sysmem(fdt_start, fdt_size); +#endif + } + } + if (load_addrp) + *load_addrp = load_addr; + if (lenp) + *lenp = len; + if (namep) { + *namep = strdup(fdt_get_name(buf, node, NULL)); + if (!namep) + return log_msg_ret("nam", -ENOMEM); + } + + return 0; +} diff --git a/boot/vbe_common.h b/boot/vbe_common.h new file mode 100644 index 00000000000..84117815a19 --- /dev/null +++ b/boot/vbe_common.h @@ -0,0 +1,137 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Verified Boot for Embedded (VBE) common functions + * + * Copyright 2024 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#ifndef __VBE_COMMON_H +#define __VBE_COMMON_H + +#include <linux/types.h> + +struct spl_image_info; +struct udevice; + +/* + * Controls whether we use a full bootmeth driver with VBE in this phase, or + * just access the information directly. + * + * For now VBE-simple uses the full bootmeth, but VBE-abrec does not, to reduce + * code size + */ +#define USE_BOOTMETH CONFIG_IS_ENABLED(BOOTMETH_VBE_SIMPLE) + +enum { + MAX_VERSION_LEN = 256, + + NVD_HDR_VER_SHIFT = 0, + NVD_HDR_VER_MASK = 0xf, + NVD_HDR_SIZE_SHIFT = 4, + NVD_HDR_SIZE_MASK = 0xf << NVD_HDR_SIZE_SHIFT, + + /* Firmware key-version is in the top 16 bits of fw_ver */ + FWVER_KEY_SHIFT = 16, + FWVER_FW_MASK = 0xffff, + + NVD_HDR_VER_CUR = 1, /* current version */ +}; + +/** + * struct vbe_nvdata - basic storage format for non-volatile data + * + * This is used for all VBE methods + * + * @crc8: crc8 for the entire record except @crc8 field itself + * @hdr: header size and version (NVD_HDR_...) + * @spare1: unused, must be 0 + * @fw_vernum: version and key version (FWVER_...) + * @flags: Flags controlling operation (enum vbe_flags) + */ +struct vbe_nvdata { + u8 crc8; + u8 hdr; + u16 spare1; + u32 fw_vernum; + u32 flags; + u8 spare2[0x34]; +}; + +/** + * vbe_get_blk() - Obtain the block device to use for VBE + * + * Decodes the string to produce a block device + * + * @storage: String indicating the device to use, e.g. "mmc1" + * @blkp: Returns associated block device, on success + * Return 0 if OK, -ENODEV if @storage does not end with a number, -E2BIG if + * the device name is more than 15 characters, -ENXIO if the block device could + * not be found + */ +int vbe_get_blk(const char *storage, struct udevice **blkp); + +/** + * vbe_read_version() - Read version-string from a block device + * + * Reads the VBE version-string from a device. This function reads a single + * block from the device, so the string cannot be larger than that. It uses a + * temporary buffer for the read, then copies in up to @size bytes + * + * @blk: Device to read from + * @offset: Offset to read, in bytes + * @version: Place to put the string + * @max_size: Maximum size of @version + * Return: 0 if OK, -E2BIG if @max_size > block size, -EBADF if the offset is + * not block-aligned, -EIO if an I/O error occurred + */ +int vbe_read_version(struct udevice *blk, ulong offset, char *version, + int max_size); + +/** + * vbe_read_nvdata() - Read non-volatile data from a block device + * + * Reads the VBE nvdata from a device. This function reads a single block from + * the device, so the nvdata cannot be larger than that. + * + * @blk: Device to read from + * @offset: Offset to read, in bytes + * @size: Number of bytes to read + * @buf: Buffer to hold the data + * Return: 0 if OK, -E2BIG if @size > block size, -EBADF if the offset is not + * block-aligned, -EIO if an I/O error occurred, -EPERM if the header version is + * incorrect, the header size is invalid or the data fails its CRC check + */ +int vbe_read_nvdata(struct udevice *blk, ulong offset, ulong size, u8 *buf); + +/** + * vbe_read_fit() - Read an image from a FIT + * + * This handles most of the VBE logic for reading from a FIT. It reads the FIT + * metadata, decides which image to load and loads it to a suitable address, + * ready for jumping to the next phase of VBE. + * + * This supports transition from VPL to SPL as well as SPL to U-Boot proper. For + * now, TPL->VPL is not supported. + * + * Both embedded and external data are supported for the FIT + * + * @blk: Block device containing FIT + * @area_offset: Byte offset of the VBE area in @blk containing the FIT + * @area_size: Size of the VBE area + * @image: SPL image to fill in with details of the loaded image, or NULL + * @load_addrp: If non-null, returns the address where the image was loaded + * @lenp: If non-null, returns the size of the image loaded, in bytes + * @namep: If non-null, returns the name of the FIT-image node that was loaded + * (allocated by this function) + * Return: 0 if OK, -EINVAL if the area does not contain an FDT (the underlying + * format for FIT), -E2BIG if the FIT extends past @area_size, -ENOMEM if there + * was not space to allocate the image-node name, other error if a read error + * occurred (see blk_read()), or something went wrong with the actually + * FIT-parsing (see fit_image_load()). + */ +int vbe_read_fit(struct udevice *blk, ulong area_offset, ulong area_size, + struct spl_image_info *image, ulong *load_addrp, ulong *lenp, + char **namep); + +#endif /* __VBE_ABREC_H */ diff --git a/boot/vbe_simple.c b/boot/vbe_simple.c index ed7b9598e38..c6766c532f2 100644 --- a/boot/vbe_simple.c +++ b/boot/vbe_simple.c @@ -18,70 +18,21 @@ #include <vbe.h> #include <dm/device-internal.h> #include <dm/ofnode.h> -#include <u-boot/crc.h> #include "vbe_simple.h" -/** struct simple_nvdata - storage format for non-volatile data */ -struct simple_nvdata { - u8 crc8; - u8 hdr; - u16 spare1; - u32 fw_vernum; - u8 spare2[0x38]; -}; - -static int simple_read_version(struct udevice *dev, struct blk_desc *desc, - u8 *buf, struct simple_state *state) +static int simple_read_nvdata(const struct simple_priv *priv, + struct udevice *blk, struct simple_state *state) { - struct simple_priv *priv = dev_get_priv(dev); - int start; - - if (priv->version_size > MMC_MAX_BLOCK_LEN) - return log_msg_ret("ver", -E2BIG); - - start = priv->area_start + priv->version_offset; - if (start & (MMC_MAX_BLOCK_LEN - 1)) - return log_msg_ret("get", -EBADF); - start /= MMC_MAX_BLOCK_LEN; - - if (blk_dread(desc, start, 1, buf) != 1) - return log_msg_ret("read", -EIO); - strlcpy(state->fw_version, buf, MAX_VERSION_LEN); - log_debug("version=%s\n", state->fw_version); + ALLOC_CACHE_ALIGN_BUFFER(u8, buf, MMC_MAX_BLOCK_LEN); + const struct vbe_nvdata *nvd; + int ret; - return 0; -} + ret = vbe_read_nvdata(blk, priv->area_start + priv->state_offset, + priv->state_size, buf); + if (ret) + return log_msg_ret("nv", ret); -static int simple_read_nvdata(struct udevice *dev, struct blk_desc *desc, - u8 *buf, struct simple_state *state) -{ - struct simple_priv *priv = dev_get_priv(dev); - uint hdr_ver, hdr_size, size, crc; - const struct simple_nvdata *nvd; - int start; - - if (priv->state_size > MMC_MAX_BLOCK_LEN) - return log_msg_ret("state", -E2BIG); - - start = priv->area_start + priv->state_offset; - if (start & (MMC_MAX_BLOCK_LEN - 1)) - return log_msg_ret("get", -EBADF); - start /= MMC_MAX_BLOCK_LEN; - - if (blk_dread(desc, start, 1, buf) != 1) - return log_msg_ret("read", -EIO); - nvd = (struct simple_nvdata *)buf; - hdr_ver = (nvd->hdr & NVD_HDR_VER_MASK) >> NVD_HDR_VER_SHIFT; - hdr_size = (nvd->hdr & NVD_HDR_SIZE_MASK) >> NVD_HDR_SIZE_SHIFT; - if (hdr_ver != NVD_HDR_VER_CUR) - return log_msg_ret("hdr", -EPERM); - size = 1 << hdr_size; - if (size > sizeof(*nvd)) - return log_msg_ret("sz", -ENOEXEC); - - crc = crc8(0, buf + 1, size - 1); - if (crc != nvd->crc8) - return log_msg_ret("crc", -EPERM); + nvd = (struct vbe_nvdata *)buf; state->fw_vernum = nvd->fw_vernum; log_debug("version=%s\n", state->fw_version); @@ -91,33 +42,20 @@ static int simple_read_nvdata(struct udevice *dev, struct blk_desc *desc, int vbe_simple_read_state(struct udevice *dev, struct simple_state *state) { - ALLOC_CACHE_ALIGN_BUFFER(u8, buf, MMC_MAX_BLOCK_LEN); struct simple_priv *priv = dev_get_priv(dev); - struct blk_desc *desc; - char devname[16]; - const char *end; - int devnum; + struct udevice *blk; int ret; - /* First figure out the block device */ - log_debug("storage=%s\n", priv->storage); - devnum = trailing_strtoln_end(priv->storage, NULL, &end); - if (devnum == -1) - return log_msg_ret("num", -ENODEV); - if (end - priv->storage >= sizeof(devname)) - return log_msg_ret("end", -E2BIG); - strlcpy(devname, priv->storage, end - priv->storage + 1); - log_debug("dev=%s, %x\n", devname, devnum); - - desc = blk_get_dev(devname, devnum); - if (!desc) - return log_msg_ret("get", -ENXIO); - - ret = simple_read_version(dev, desc, buf, state); + ret = vbe_get_blk(priv->storage, &blk); + if (ret) + return log_msg_ret("blk", ret); + + ret = vbe_read_version(blk, priv->area_start + priv->version_offset, + state->fw_version, MAX_VERSION_LEN); if (ret) return log_msg_ret("ver", ret); - ret = simple_read_nvdata(dev, desc, buf, state); + ret = simple_read_nvdata(priv, blk, state); if (ret) return log_msg_ret("nvd", ret); diff --git a/boot/vbe_simple.h b/boot/vbe_simple.h index 56d319206f2..dc3f70052b0 100644 --- a/boot/vbe_simple.h +++ b/boot/vbe_simple.h @@ -9,20 +9,8 @@ #ifndef __VBE_SIMPLE_H #define __VBE_SIMPLE_H -enum { - MAX_VERSION_LEN = 256, - - NVD_HDR_VER_SHIFT = 0, - NVD_HDR_VER_MASK = 0xf, - NVD_HDR_SIZE_SHIFT = 4, - NVD_HDR_SIZE_MASK = 0xf << NVD_HDR_SIZE_SHIFT, - - /* Firmware key-version is in the top 16 bits of fw_ver */ - FWVER_KEY_SHIFT = 16, - FWVER_FW_MASK = 0xffff, - - NVD_HDR_VER_CUR = 1, /* current version */ -}; +#include <linux/types.h> +#include "vbe_common.h" /** struct simple_priv - information read from the device tree */ struct simple_priv { diff --git a/boot/vbe_simple_fw.c b/boot/vbe_simple_fw.c index da9701f9eb9..cb5534fc731 100644 --- a/boot/vbe_simple_fw.c +++ b/boot/vbe_simple_fw.c @@ -8,6 +8,7 @@ #define LOG_CATEGORY LOGC_BOOT +#include <binman_sym.h> #include <bloblist.h> #include <bootdev.h> #include <bootflow.h> @@ -17,13 +18,24 @@ #include <image.h> #include <log.h> #include <mapmem.h> -#include <memalign.h> #include <mmc.h> #include <spl.h> #include <vbe.h> #include <dm/device-internal.h> +#include "vbe_common.h" #include "vbe_simple.h" +#ifdef CONFIG_BOOTMETH_VBE_SIMPLE +binman_sym_extern(ulong, vbe_a, image_pos); +binman_sym_extern(ulong, vbe_a, size); +#else +binman_sym_declare(ulong, vbe_a, image_pos); +binman_sym_declare(ulong, vbe_a, size); +#endif + +binman_sym_declare(ulong, vpl, image_pos); +binman_sym_declare(ulong, vpl, size); + /** * vbe_simple_read_bootflow_fw() - Create a bootflow for firmware * @@ -38,109 +50,26 @@ */ int vbe_simple_read_bootflow_fw(struct udevice *dev, struct bootflow *bflow) { - ALLOC_CACHE_ALIGN_BUFFER(u8, sbuf, MMC_MAX_BLOCK_LEN); struct udevice *media = dev_get_parent(bflow->dev); struct udevice *meth = bflow->method; struct simple_priv *priv = dev_get_priv(meth); - const char *fit_uname, *fit_uname_config; - struct bootm_headers images = {}; - ulong offset, size, blknum, addr, len, load_addr, num_blks; - enum image_phase_t phase; - struct blk_desc *desc; + ulong len, load_addr; struct udevice *blk; - int node, ret; - void *buf; + int ret; log_debug("media=%s\n", media->name); ret = blk_get_from_parent(media, &blk); if (ret) return log_msg_ret("med", ret); log_debug("blk=%s\n", blk->name); - desc = dev_get_uclass_plat(blk); - - offset = priv->area_start + priv->skip_offset; - - /* read in one block to find the FIT size */ - blknum = offset / desc->blksz; - log_debug("read at %lx, blknum %lx\n", offset, blknum); - ret = blk_read(blk, blknum, 1, sbuf); - if (ret < 0) - return log_msg_ret("rd", ret); - - ret = fdt_check_header(sbuf); - if (ret < 0) - return log_msg_ret("fdt", -EINVAL); - size = fdt_totalsize(sbuf); - if (size > priv->area_size) - return log_msg_ret("fdt", -E2BIG); - log_debug("FIT size %lx\n", size); - - /* - * Load the FIT into the SPL memory. This is typically a FIT with - * external data, so this is quite small, perhaps a few KB. - */ - addr = CONFIG_VAL(TEXT_BASE); - buf = map_sysmem(addr, size); - num_blks = DIV_ROUND_UP(size, desc->blksz); - log_debug("read %lx, %lx blocks to %lx / %p\n", size, num_blks, addr, - buf); - ret = blk_read(blk, blknum, num_blks, buf); - if (ret < 0) - return log_msg_ret("rd", ret); - - /* figure out the phase to load */ - phase = IS_ENABLED(CONFIG_VPL_BUILD) ? IH_PHASE_SPL : IH_PHASE_U_BOOT; - - /* - * Load the image from the FIT. We ignore any load-address information - * so in practice this simply locates the image in the external-data - * region and returns its address and size. Since we only loaded the FIT - * itself, only a part of the image will be present, at best. - */ - fit_uname = NULL; - fit_uname_config = NULL; - log_debug("loading FIT\n"); - ret = fit_image_load(&images, addr, &fit_uname, &fit_uname_config, - IH_ARCH_SANDBOX, image_ph(phase, IH_TYPE_FIRMWARE), - BOOTSTAGE_ID_FIT_SPL_START, FIT_LOAD_IGNORED, - &load_addr, &len); - if (ret < 0) - return log_msg_ret("ld", ret); - node = ret; - log_debug("loaded to %lx\n", load_addr); - - /* For FIT external data, read in the external data */ - if (load_addr + len > addr + size) { - ulong base, full_size; - void *base_buf; - - /* Find the start address to load from */ - base = ALIGN_DOWN(load_addr, desc->blksz); - - /* - * Get the total number of bytes to load, taking care of - * block alignment - */ - full_size = load_addr + len - base; - - /* - * Get the start block number, number of blocks and the address - * to load to, then load the blocks - */ - blknum = (offset + base - addr) / desc->blksz; - num_blks = DIV_ROUND_UP(full_size, desc->blksz); - base_buf = map_sysmem(base, full_size); - ret = blk_read(blk, blknum, num_blks, base_buf); - log_debug("read %lx %lx, %lx blocks to %lx / %p: ret=%d\n", - blknum, full_size, num_blks, base, base_buf, ret); - if (ret < 0) - return log_msg_ret("rd", ret); - } + + ret = vbe_read_fit(blk, priv->area_start + priv->skip_offset, + priv->area_size, NULL, &load_addr, &len, + &bflow->name); + if (ret) + return log_msg_ret("vbe", ret); /* set up the bootflow with the info we obtained */ - bflow->name = strdup(fdt_get_name(buf, node, NULL)); - if (!bflow->name) - return log_msg_ret("name", -ENOMEM); bflow->blk = blk; bflow->buf = map_sysmem(load_addr, len); bflow->size = len; @@ -148,16 +77,14 @@ int vbe_simple_read_bootflow_fw(struct udevice *dev, struct bootflow *bflow) return 0; } -static int simple_load_from_image(struct spl_image_info *spl_image, +static int simple_load_from_image(struct spl_image_info *image, struct spl_boot_device *bootdev) { - struct udevice *meth, *bdev; - struct simple_priv *priv; - struct bootflow bflow; struct vbe_handoff *handoff; int ret; - if (xpl_phase() != PHASE_VPL && xpl_phase() != PHASE_SPL) + if (xpl_phase() != PHASE_VPL && xpl_phase() != PHASE_SPL && + xpl_phase() != PHASE_TPL) return -ENOENT; ret = bloblist_ensure_size(BLOBLISTT_VBE, sizeof(struct vbe_handoff), @@ -165,36 +92,64 @@ static int simple_load_from_image(struct spl_image_info *spl_image, if (ret) return log_msg_ret("ro", ret); - vbe_find_first_device(&meth); - if (!meth) - return log_msg_ret("vd", -ENODEV); - log_debug("vbe dev %s\n", meth->name); - ret = device_probe(meth); - if (ret) - return log_msg_ret("probe", ret); - - priv = dev_get_priv(meth); - log_debug("simple %s\n", priv->storage); - ret = bootdev_find_by_label(priv->storage, &bdev, NULL); - if (ret) - return log_msg_ret("bd", ret); - log_debug("bootdev %s\n", bdev->name); - - bootflow_init(&bflow, bdev, meth); - ret = bootmeth_read_bootflow(meth, &bflow); - log_debug("\nfw ret=%d\n", ret); - if (ret) - return log_msg_ret("rd", ret); - - /* jump to the image */ - spl_image->flags = SPL_SANDBOXF_ARG_IS_BUF; - spl_image->arg = bflow.buf; - spl_image->size = bflow.size; - log_debug("Image: %s at %p size %x\n", bflow.name, bflow.buf, - bflow.size); + if (USE_BOOTMETH) { + struct udevice *meth, *bdev; + struct simple_priv *priv; + struct bootflow bflow; + + vbe_find_first_device(&meth); + if (!meth) + return log_msg_ret("vd", -ENODEV); + log_debug("vbe dev %s\n", meth->name); + ret = device_probe(meth); + if (ret) + return log_msg_ret("probe", ret); + + priv = dev_get_priv(meth); + log_debug("simple %s\n", priv->storage); + ret = bootdev_find_by_label(priv->storage, &bdev, NULL); + if (ret) + return log_msg_ret("bd", ret); + log_debug("bootdev %s\n", bdev->name); + + bootflow_init(&bflow, bdev, meth); + ret = bootmeth_read_bootflow(meth, &bflow); + log_debug("\nfw ret=%d\n", ret); + if (ret) + return log_msg_ret("rd", ret); - /* this is not used from now on, so free it */ - bootflow_free(&bflow); + /* jump to the image */ + image->flags = SPL_SANDBOXF_ARG_IS_BUF; + image->arg = bflow.buf; + image->size = bflow.size; + log_debug("Image: %s at %p size %x\n", bflow.name, bflow.buf, + bflow.size); + + /* this is not used from now on, so free it */ + bootflow_free(&bflow); + } else { + struct udevice *media, *blk; + ulong offset, size; + + ret = uclass_get_device_by_seq(UCLASS_MMC, 1, &media); + if (ret) + return log_msg_ret("vdv", ret); + ret = blk_get_from_parent(media, &blk); + if (ret) + return log_msg_ret("med", ret); + if (xpl_phase() == PHASE_TPL) { + offset = binman_sym(ulong, vpl, image_pos); + size = binman_sym(ulong, vpl, size); + } else { + offset = binman_sym(ulong, vbe_a, image_pos); + size = binman_sym(ulong, vbe_a, size); + printf("offset=%lx\n", offset); + } + + ret = vbe_read_fit(blk, offset, size, image, NULL, NULL, NULL); + if (ret) + return log_msg_ret("vbe", ret); + } /* Record that VBE was used in this phase */ handoff->phases |= 1 << xpl_phase(); diff --git a/common/spl/Kconfig b/common/spl/Kconfig index 4e56d9909c8..94e118f8465 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -983,6 +983,14 @@ config SPL_NAND_IDENT help SPL uses the chip ID list to identify the NAND flash. +config SPL_RELOC_LOADER + bool "Allow relocating the next phase" + help + In some cases multiple U-Boot phases need to run in SRAM, typically + at the same address. Enable this to support loading the next phase + to temporary memory, then copying it into place afterwards, then + jumping to it. + config SPL_UBI bool "Support UBI" help diff --git a/common/spl/Kconfig.tpl b/common/spl/Kconfig.tpl index 92d4d43ec87..22ca7016453 100644 --- a/common/spl/Kconfig.tpl +++ b/common/spl/Kconfig.tpl @@ -268,6 +268,14 @@ config TPL_RAM_DEVICE be already in memory when TPL takes over, e.g. loaded by the boot ROM. +config TPL_RELOC_LOADER + bool "Allow relocating the next phase" + help + In some cases multiple U-Boot phases need to run in SRAM, typically + at the same address. Enable this to support loading the next phase + to temporary memory, then copying it into place afterwards, then + jumping to it. + config TPL_RTC bool "Support RTC drivers" help diff --git a/common/spl/Kconfig.vpl b/common/spl/Kconfig.vpl index eb57dfabea5..97dfc630152 100644 --- a/common/spl/Kconfig.vpl +++ b/common/spl/Kconfig.vpl @@ -181,6 +181,14 @@ config VPL_PCI necessary driver support. This enables the drivers in drivers/pci as part of a VPL build. +config VPL_RELOC_LOADER + bool "Allow relocating the next phase" + help + In some cases multiple U-Boot phases need to run in SRAM, typically + at the same address. Enable this to support loading the next phase + to temporary memory, then copying it into place afterwards, then + jumping to it. + config VPL_RTC bool "Support RTC drivers" help diff --git a/common/spl/Makefile b/common/spl/Makefile index 75123eb666b..4c9482bd309 100644 --- a/common/spl/Makefile +++ b/common/spl/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_$(PHASE_)BOOTROM_SUPPORT) += spl_bootrom.o obj-$(CONFIG_$(PHASE_)LOAD_FIT) += spl_fit.o obj-$(CONFIG_$(PHASE_)BLK_FS) += spl_blk_fs.o obj-$(CONFIG_$(PHASE_)LEGACY_IMAGE_FORMAT) += spl_legacy.o +obj-$(CONFIG_$(PHASE_)RELOC_LOADER) += spl_reloc.o obj-$(CONFIG_$(PHASE_)NOR_SUPPORT) += spl_nor.o obj-$(CONFIG_$(PHASE_)XIP_SUPPORT) += spl_xip.o obj-$(CONFIG_$(PHASE_)YMODEM_SUPPORT) += spl_ymodem.o diff --git a/common/spl/spl.c b/common/spl/spl.c index 02269fff93c..9af0a4954d4 100644 --- a/common/spl/spl.c +++ b/common/spl/spl.c @@ -675,8 +675,7 @@ void board_init_r(gd_t *dummy1, ulong dummy2) BOOT_DEVICE_NONE, BOOT_DEVICE_NONE, }; - typedef void __noreturn (*jump_to_image_t)(struct spl_image_info *); - jump_to_image_t jump_to_image = &jump_to_image_no_args; + spl_jump_to_image_t jump_to_image = &jump_to_image_no_args; struct spl_image_info spl_image; int ret, os; @@ -831,6 +830,18 @@ void board_init_r(gd_t *dummy1, ulong dummy2) } spl_board_prepare_for_boot(); + + if (CONFIG_IS_ENABLED(RELOC_LOADER)) { + int ret; + + ret = spl_reloc_jump(&spl_image, jump_to_image); + if (ret) { + if (xpl_phase() == PHASE_VPL) + printf("jump failed %d\n", ret); + hang(); + } + } + jump_to_image(&spl_image); } diff --git a/common/spl/spl_reloc.c b/common/spl/spl_reloc.c new file mode 100644 index 00000000000..be8349b535b --- /dev/null +++ b/common/spl/spl_reloc.c @@ -0,0 +1,183 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2024 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#include <gzip.h> +#include <image.h> +#include <log.h> +#include <mapmem.h> +#include <spl.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/sections.h> +#include <asm/unaligned.h> +#include <linux/types.h> +#include <lzma/LzmaTypes.h> +#include <lzma/LzmaDec.h> +#include <lzma/LzmaTools.h> +#include <u-boot/crc.h> +#include <u-boot/lz4.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* provide a way to jump straight into the relocation code, for debugging */ +#define DEBUG_JUMP 0 + +enum { + /* margin to allow for stack growth */ + RELOC_STACK_MARGIN = 0x800, + + /* align base address for DMA controllers which require it */ + BASE_ALIGN = 0x200, + + STACK_PROT_VALUE = 0x51ce4697, +}; + +typedef int (*rcode_func)(struct spl_image_info *image); + +static int setup_layout(struct spl_image_info *image, ulong *addrp) +{ + ulong base, fdt_size; + ulong limit, rcode_base; + uint rcode_size; + int buf_size, margin; + char *rcode_buf; + + limit = ALIGN(map_to_sysmem(&limit) - RELOC_STACK_MARGIN, 8); + image->stack_prot = map_sysmem(limit, sizeof(uint)); + *image->stack_prot = STACK_PROT_VALUE; + + fdt_size = fdt_totalsize(gd->fdt_blob); + base = ALIGN(map_to_sysmem(gd->fdt_blob) + fdt_size + BASE_ALIGN - 1, + BASE_ALIGN); + + rcode_size = _rcode_end - _rcode_start; + rcode_base = limit - rcode_size; + buf_size = rcode_base - base; + uint need_size = image->size + image->fdt_size; + margin = buf_size - need_size; + log_debug("spl_reloc %s->%s: margin%s%lx limit %lx fdt_size %lx base %lx avail %x image %x fdt %lx need %x\n", + spl_phase_name(spl_phase()), spl_phase_name(spl_phase() + 1), + margin >= 0 ? " " : " -", abs(margin), limit, fdt_size, base, + buf_size, image->size, image->fdt_size, need_size); + if (margin < 0) { + log_err("Image size %x but buffer is only %x\n", need_size, + buf_size); + return -ENOSPC; + } + + rcode_buf = map_sysmem(rcode_base, rcode_size); + log_debug("_rcode_start %p: %x -- func %p %x\n", _rcode_start, + *(uint *)_rcode_start, setup_layout, *(uint *)setup_layout); + + image->reloc_offset = rcode_buf - _rcode_start; + log_debug("_rcode start %lx base %lx size %x offset %lx\n", + (ulong)map_to_sysmem(_rcode_start), rcode_base, rcode_size, + image->reloc_offset); + + memcpy(rcode_buf, _rcode_start, rcode_size); + + image->buf = map_sysmem(base, need_size); + image->fdt_buf = image->buf + image->size; + image->rcode_buf = rcode_buf; + *addrp = base; + + return 0; +} + +int spl_reloc_prepare(struct spl_image_info *image, ulong *addrp) +{ + int ret; + + ret = setup_layout(image, addrp); + if (ret) + return ret; + + return 0; +} + +typedef void __noreturn (*image_entry_noargs_t)(uint crc, uint unc_len); + +/* this is the relocation + jump code that is copied to the top of memory */ +__rcode int rcode_reloc_and_jump(struct spl_image_info *image) +{ + image_entry_noargs_t entry = (image_entry_noargs_t)image->entry_point; + u32 *dst; + ulong image_len; + size_t unc_len; + int ret, crc; + uint magic; + + dst = map_sysmem(image->load_addr, image->size); + unc_len = (void *)image->rcode_buf - (void *)dst; + image_len = image->size; + if (*image->stack_prot != STACK_PROT_VALUE) + return -EFAULT; + magic = get_unaligned_le32(image->buf); + if (CONFIG_IS_ENABLED(LZMA)) { + SizeT lzma_len = unc_len; + + ret = lzmaBuffToBuffDecompress((u8 *)dst, &lzma_len, + image->buf, image_len); + unc_len = lzma_len; + } else if (CONFIG_IS_ENABLED(GZIP)) { + ret = gunzip(dst, unc_len, image->buf, &image_len); + } else if (CONFIG_IS_ENABLED(LZ4) && magic == LZ4F_MAGIC) { + ret = ulz4fn(image->buf, image_len, dst, &unc_len); + if (ret) + return ret; + } else { + u32 *src, *end, *ptr; + + unc_len = image->size; + for (src = image->buf, end = (void *)src + image->size, + ptr = dst; src < end;) + *ptr++ = *src++; + } + if (*image->stack_prot != STACK_PROT_VALUE) + return -EFAULT; + + /* copy in the FDT if needed */ + if (image->fdt_size) + memcpy(image->fdt_start, image->fdt_buf, image->fdt_size); + + crc = crc8(0, (u8 *)dst, unc_len); + + /* jump to the entry point */ + entry(crc, unc_len); +} + +int spl_reloc_jump(struct spl_image_info *image, spl_jump_to_image_t jump) +{ + rcode_func loader; + int ret; + + log_debug("malloc usage %lx bytes (%ld KB of %d KB)\n", gd->malloc_ptr, + gd->malloc_ptr / 1024, CONFIG_VAL(SYS_MALLOC_F_LEN) / 1024); + + if (*image->stack_prot != STACK_PROT_VALUE) { + log_err("stack busted, cannot continue\n"); + return -EFAULT; + } + loader = (rcode_func)(void *)rcode_reloc_and_jump + image->reloc_offset; + log_debug("Jumping via %p to %lx - image %p size %x load %lx\n", loader, + image->entry_point, image, image->size, image->load_addr); + + log_debug("unc_len %lx\n", + image->rcode_buf - map_sysmem(image->load_addr, image->size)); + if (DEBUG_JUMP) { + rcode_reloc_and_jump(image); + } else { + /* + * Must disable LOG_DEBUG since the decompressor cannot call + * log functions, printf(), etc. + */ + _Static_assert(DEBUG_JUMP || !_DEBUG, + "Cannot have debug output from decompressor"); + ret = loader(image); + } + + return -EFAULT; +} diff --git a/include/spl.h b/include/spl.h index 43b344dbc55..7155e9c67aa 100644 --- a/include/spl.h +++ b/include/spl.h @@ -14,6 +14,7 @@ #include <asm/global_data.h> #include <asm/spl.h> #include <handoff.h> +#include <image.h> #include <mmc.h> struct blk_desc; @@ -265,6 +266,21 @@ enum spl_sandbox_flags { SPL_SANDBOXF_ARG_IS_BUF, }; +/** + * struct spl_image_info - Information about the SPL image being loaded + * + * @fdt_size: Size of the FDT for the image (0 if none) + * @buf: Buffer where the image should be loaded + * @fdt_buf: Buffer where the FDT will be copied by spl_reloc_jump(), only used + * if @fdt_size is non-zero + * @fdt_start: Pointer to the FDT to be copied (must be set up before calling + * spl_reloc_jump() + * @rcode_buf: Buffer to hold the relocating-jump code + * @stack_prot: Pointer to the stack-protection value, used to ensure the stack + * does not overflow + * @reloc_offset: offset between the relocating-jump code and its place in the + * currently running image + */ struct spl_image_info { const char *name; u8 os; @@ -276,6 +292,7 @@ struct spl_image_info { u32 boot_device; u32 offset; u32 size; + ulong fdt_size; u32 flags; void *arg; #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK @@ -283,8 +300,19 @@ struct spl_image_info { ulong dcrc_length; ulong dcrc; #endif +#if CONFIG_IS_ENABLED(RELOC_LOADER) + void *buf; + void *fdt_buf; + void *fdt_start; + void *rcode_buf; + uint *stack_prot; + ulong reloc_offset; +#endif }; +/* function to jump to an image from SPL */ +typedef void __noreturn (*spl_jump_to_image_t)(struct spl_image_info *); + static inline void *spl_image_fdt_addr(struct spl_image_info *info) { #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL) @@ -316,12 +344,18 @@ typedef ulong (*spl_load_reader)(struct spl_load_info *load, ulong sector, * @read: Function to call to read from the device * @priv: Private data for the device * @bl_len: Block length for reading in bytes + * @phase: Image phase to load + * @fit_loaded: true if the FIT has been loaded, except for external data */ struct spl_load_info { spl_load_reader read; void *priv; #if IS_ENABLED(CONFIG_SPL_LOAD_BLOCK) - int bl_len; + u16 bl_len; +#endif +#if CONFIG_IS_ENABLED(BOOTMETH_VBE) + u8 phase; + u8 fit_loaded; #endif }; @@ -344,6 +378,32 @@ static inline void spl_set_bl_len(struct spl_load_info *info, int bl_len) #endif } +static inline void xpl_set_phase(struct spl_load_info *info, + enum image_phase_t phase) +{ +#if CONFIG_IS_ENABLED(BOOTMETH_VBE) + info->phase = phase; +#endif +} + +static inline enum image_phase_t xpl_get_phase(struct spl_load_info *info) +{ +#if CONFIG_IS_ENABLED(BOOTMETH_VBE) + return info->phase; +#else + return IH_PHASE_NONE; +#endif +} + +static inline bool xpl_get_fit_loaded(struct spl_load_info *info) +{ +#if CONFIG_IS_ENABLED(BOOTMETH_VBE) + return info->fit_loaded; +#else + return false; +#endif +} + /** * spl_load_init() - Set up a new spl_load_info structure */ @@ -354,6 +414,7 @@ static inline void spl_load_init(struct spl_load_info *load, load->read = h_read; load->priv = priv; spl_set_bl_len(load, bl_len); + xpl_set_phase(load, IH_PHASE_NONE); } /* @@ -1113,4 +1174,31 @@ int spl_write_upl_handoff(struct spl_image_info *spl_image); */ void spl_upl_init(void); +/** + * spl_reloc_prepare() - Prepare the relocating loader ready for use + * + * Sets up the relocating loader ready for use. This must be called before + * spl_reloc_jump() can be used. + * + * The memory layout is figured out, making use of the space between the top of + * the current image and the top of memory. + * + * Once this is done, the relocating-jump code is copied into place at + * image->rcode_buf + * + * @image: SPL image containing information. This is updated with various + * necessary values. On entry, the size and fdt_size fields must be valid + * @addrp: Returns the address to which the image should be loaded into memory + * Return 0 if OK, -ENOSPC if there is not enough memory available + */ +int spl_reloc_prepare(struct spl_image_info *image, ulong *addrp); + +/** + * spl_reloc_jump() - Jump to an image, via a 'relocating-jump' region + * + * @image: SPL image to jump to + * @func: Function to call in the final image + */ +int spl_reloc_jump(struct spl_image_info *image, spl_jump_to_image_t func); + #endif |